MMM vs MM with A123's.. Check this out boys :D

Hi all,

Got my MMM last week and finally managed to get it out for a run on the weekend. So far so good, its had about 6 packs through it, the fan is still spinning, and everything is working, HURRAY! I had to solder 3 "jumper" motor leads to connect to the ESC as the 8XL wires are real short, and the Tekno Revo conversion mounts the ESC quite far forward.

My setup:

Revo 3.3
Tekno RC Revo Conversion
5s1p A123 2300mAh home made packs ;)
Feigao 8XL 2084kv motor
Mamba Max with CCBEC@6v and Monster Mamba Max ESCs

Alright, so I got out to the track and decided to give the Mamba Max one last run before I put the monster in. The first graph below is with the Mamba Max, and the second is with the Monster. Gear setup and batteries were the same for both runs, and I topped up the batteries before each run as well.
I was using the 36T spur gear, 15t clutch (clutch shoes on backwards and spring removed), with 5s1p A123 batts. Oh, I'm using the DPRII-150 to create the graphs.

MM


MMM


The graph sections are approximately 2 minutes long, but they're taking from slightly different times in the run, due to me flipping the car and having to run out to turn it over lol.

How insane is that? Max amp draw with the MM was like around 62A. Max amp draw on the MMM was around 86A. Thats with exactly the same setup and batteries.

I'm definitely impressed with my Monster, but now I'm facing a new problem lol. We do 6 min races at my track, and with the 5s1p setup and the MM with 36T spur, I was barely getting 5.5min and around 6.5 laps. Still short of the mark but not bad. Now with the larger amp draw from the Monster, I'm getting barely 3 min run times, and I can hardly race with that lol.

My 5s1p packs are 392g and 396g each. I've tried them in 5s2p, but the car is just WAY to heavy and it'll break something if I do a dodgey landing, which is definitely bound to happen lol.

Would people recommend dropping to 4s2p with the same 8XL. As you can see from the graphs, the voltage sag is huge, so I'm definitely not getting max RPM out of the 8XL at full speed with the 1p setup anyway, so I figure 4s2p would be much less voltage sag and so the top speed should be somewhat comparable to the 5s1p setup anyway.
If its not fast enough, I can always pickup a 7XL, but I'm trying to avoid spending more dosh, if possible.

Post up your opinions please :D

Thanks guys